Grade Calculator Application Name: FLastnameChartingI6Descri…
Grade Calculator Application Name: FLastnameChartingI6Description: Write a C program that calculates a student’s final grade based on their scores in multiple subjects. The program should use the specified functions for displaying information and performing calculations. Requirements: User Input: Ask the user to enter the number of subjects (between 2 and 5). For each subject, ask the user to enter their score (0-100). Validate user input: If the user enters an invalid option show an error message and allow them to reenter their choice. If the user enters a grade below 0 or a grade above 100 show an error message and allow them to reenter their choice. Function Implementation: You will call all these functions from main Use a void function with no parameters passed to display a welcome message and explain how the program works. Use a value returning function that calculates and returns the average score based on the entered subject scores. You will pass the total of the scores and the number of subjects. Use another void function that is passed the average to determine the final grade based on the average score using the following scale: You will pass the average to this function to determmine the letter grade based on the criteria below: A —- 90-100 B —- 80-89 C —- 70-79 D —- 60-69 F —- Below 60 You will then display the final student report with their average score, final grade and message*. There should be a message for each final grade based on the average (you will need to make up the messages for each letter grade). Display the generated output in a well-formatted way. Sample Input Enter the number of subjects (1-5): 3Enter score for Subject 1: 95Enter score for Subject 2: 88Enter score for Subject 3: 92 Sample Output Welcome to the Student Grade Calculator!—————————————-Average Score: 91.67Final Grade: ACongratulations! You did an excellent job!